Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Alain Valette"'
Autor:
Alain Valette
Publikováno v:
Electronic Journal of Graph Theory and Applications, Vol 5, Iss 1 (2017)
For a finite connected graph $X$, we consider the graph $RX$ obtained from $X$ by associating a new vertex to every edge of $X$ and joining by edges the extremities of each edge of $X$ to the corresponding new vertex. We express the spectrum of the L
Externí odkaz:
https://doaj.org/article/d32e854db9c640b890a90969f3595657
Property (T) is a rigidity property for topological groups, first formulated by D. Kazhdan in the mid 1960's with the aim of demonstrating that a large class of lattices are finitely generated. Later developments have shown that Property (T) plays an
Publikováno v:
Journal of Algebra. 595:69-104
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca22205edabacc5eef6e9c17dd26fcbe
https://doi.org/10.1016/j.jalgebra.2021.11.032
https://doi.org/10.1016/j.jalgebra.2021.11.032
This text is a self contained treatment of expander graphs and in particular their explicit construction. Expander graphs are both highly connected but sparse, and besides their interest within combinatorics and graph theory, they also find various a
Autor:
Antoine Bourquin, Alain Valette
Publikováno v:
Involve, a Journal of Mathematics. 14:89-102
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c7da0c8485dfd24e14eb57c54a5991b
https://doi.org/10.2140/involve.2021.14.89
https://doi.org/10.2140/involve.2021.14.89
Autor:
Richard M Weiss, Jean-Pierre Bourguignon, Pierre Deligne, Jean-Pierre Tignol, Pierre-Antoine Absil, Franz Bingen, Michel Broué, Alain Valette, Michel Racine, Roger Howe, Jef Thas, Hendrik Van Maldeghem, Bernhard Muhlherr
Publikováno v:
Notices of the American Mathematical Society. 70:1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ada2bfd30b16a15fa985038bb69d234d
https://doi.org/10.1090/noti2601
https://doi.org/10.1090/noti2601
Autor:
Ana Khukhro, Alain Valette
Publikováno v:
Analysis and Geometry on Graphs and Manifolds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e54ea7aa46277728aac2d627a4974b1
https://doi.org/10.1017/9781108615259.013
https://doi.org/10.1017/9781108615259.013
Autor:
Alain Valette, Romain Tessera
Publikováno v:
Journal of Topology and Analysis. 12:267-292
A locally compact group $G$ has property PL if every isometric $G$-action either has bounded orbits or is (metrically) proper. For $p>1$, say that $G$ has property $BP_{L^p}$ if the same alternative holds for the smaller class of affine isometric act
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c37ba0eca8497b554713b1a43df61dd
https://doi.org/10.1142/s1793525319500547
https://doi.org/10.1142/s1793525319500547
Publikováno v:
Journal of Group Theory. 22:1-13
Let G be a discrete group with Property (T). It is a standard fact that, in a unitary representation of G on a Hilbert space ℋ {\mathcal{H}} , almost invariant vectors are close to invariant vectors, in a quantitative way. We begin by showing that,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c13a1068283928e97152e1433495e100
https://doi.org/10.1515/jgth-2018-0030
https://doi.org/10.1515/jgth-2018-0030
Autor:
Alain Valette, Sanaz Pooya
Publikováno v:
Glasgow Mathematical Journal. 60:481-486
We provide a new computation of the K-theory of the group C*-algebra of the solvable Baumslag–Solitar group BS(1, n) (n ≠ 1); our computation is based on the Pimsner–Voiculescu 6-terms exact sequence, by viewing BS(1, n) as a semi-direct produc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9a820271df25fc7e28cde289c28cb97
https://doi.org/10.1017/s0017089517000210
https://doi.org/10.1017/s0017089517000210